The digital camera consists of many modes and the automatic one is the most popular one. If you jump too lazy or afraid to look at least semi-automatic modes antics that appear inside the viewfinder (aperture and exposure time) and tries to assess if they are good for the photo you're doing.
Priority mode aperture (semi)
In this mode, the photographer decides which aperture to use and usually also decides which sensor sensitivity. Depending on your digital camera model and settings it can also be calculated automatically adequate sensitivity. So, with this mode you choose the aperture and the camera calculates the proper exposure time. This is the way that most use in 80% of the photos. Everyone should get used to a way to shoot and I got used to it. Usually I choose the opening. To gently press the shutter button the camera tells me what the exposure time the camera thinks it's right. Depending on whether the time seems very low or very high open or close the diaphragm. Press the shutter button and if I have time I then shot.
It is advisable to use when you want to control depth of field, which is something we talk a couple of issues later. Orientation, proportion and reframing of your camera are another important point. In this question we will see how it affects the choice of frame and proportions of the sides to the bottom of the photo. We will also see how to make cuts to our photos to improve their composition at the time of post-processing. The digital camera sensors are what determine the original format and proportions between the sides of the photos. Not all sensors have the same proportions between the height and width. Thus there are manufacturers that use format 4:3, 3:2 and other (though less common) of 16:9, each more oblong.
These are the three most common formats for digital cameras on the market. But there are other more specific formats such as the square or panoramic. Although these formats have cameras, thanks to digital retouching tools such as Photoshop can crop images, using new proportions, reframe and even change the orientation of the photos. So basically the choice between taking the picture horizontally or vertically depends on you.
In most landscapes, use the horizontal format, since it is the best suited in these conditions, it shows both heaven and earth. The horizontal or landscape format gives more sense of settlement and it is very natural. That does not mean that all landscapes have to go horizontal. We may also use a vertical digital camera orientation to give more depth to the scene or to include an object in the foreground.